Terry Makedon or CatalystMaker as he is also known updated his Twitter profile to inform us that ATI are expected to be releasing their latest suite of Catalyst drivers on Friday 15th May, two days later than previously planned. These drivers will be the first to officially support the recently released 4770 GPU and like the 8.612 drivers will feature full Windows 7 WHQL certification. Full OpenGL 3.1 support will also be added in the driver update.